/*
 * Copyright (c) 2013 Functional Streams for Scala
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package fs2
package io
package net
package tls

import javax.net.ssl.SSLEngine

import cats.effect.Sync

private[tls] trait SSLEngineTaskRunner[F[_]] {
  def runDelegatedTasks: F[Unit]
}

private[tls] object SSLEngineTaskRunner {
  def apply[F[_]](
      engine: SSLEngine
  )(implicit F: Sync[F]): SSLEngineTaskRunner[F] =
    new SSLEngineTaskRunner[F] {
      def runDelegatedTasks: F[Unit] =
        F.blocking {
          while ({
            val task = engine.getDelegatedTask
            if (task ne null) task.run
            task ne null
          }) {}
        }
    }
}
